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Consider the complete combustion of butane,

Question:

Consider the complete combustion of butane, the amount of butane utilized to produce $72.0 \mathrm{~g}$ of water is ________$\times 10^{-1} \mathrm{~g}$. (in nearest integer)

Solution:

$\mathrm{C}_{4} \mathrm{H}_{10}+\frac{13}{2} \mathrm{O}_{2} \longrightarrow 4 \mathrm{CO}_{2}+5 \mathrm{H}_{2} \mathrm{O}$

Moles of $\mathrm{H}_{2} \mathrm{O}=\frac{72}{18}=4$

Moles of $\mathrm{C}_{4} \mathrm{H}_{10}$ used $=\frac{1}{5} \times 4$

Weight of $\mathrm{C}_{4} \mathrm{H}_{10}$ used $=\frac{4}{5} \times 58$

$=46.4 \mathrm{gm}$

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Shivgami - May 4, 2022, 5:23 p.m.


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